#-*- coding: utf-8 -*-
#@File    : msg.py
#@Time    : 2021/3/19 21:14
#@Author  : xintian
#@Email   : 1730588479@qq.com
#@Software: PyCharm
class Msg:
    def add_msg(self):
        pass
    def list_msg(self):
        pass
    def delete_msg(self):
        pass